Re: [Ginp-developers] Scalability and PicCollections

[Justin <ju...@sq...>]

Doug,

	More checkins.  First off:  You reinserted a urldecode when getting a 
request parameters in GinpPictureServlet.  You do not need to do this. 
When you call req.getParameter("foo") the application server 
automatically URL Decodes the parameter for you.  Doing it twice causes 
problems when you have things like '+' signs or spaces in the URL.  If 
you need it for your internationalization stuff then something else 
somewhere else is incorrect.

	Secondly.  I made the first person who gets to a directory without 
thumbnails start the thread that makes the thumbnails and the request 
will wait till it finishes.  If they are impatient and try to reload the 
page then they will get the page with the thumbnails that have already 
been generated, and thumbnail generation will continue in the background.

	I think GINP is working pretty well lately.  The performance seems good.

Regards,

	Justin
Justin wrote:
> 
> Doug,
>     Well the problem ginp was having before was that everytime each web 
> user changed directories it re-read all the directory information.  Now 
> whenever the system needs the directory information it accesses a 
> central read-only cache that is shared among web users.  So if 300 
> people pull up the same page there is only one copy of the directory 
> information pulled and stored.  When 300 people change directories the 
> directory gets read and stored only once, instead of being read and 
> stored 300 times as the previous implementation worked.  It also clears 
> every two minutes, just so if you add pictures to a directory you don't 
> have to restart the server.
>     
>     When you use start with Eclipse I highly recommend reading through 
> the tutorial that comes with it.  It is a great investment timewise.
> 
>     I'll see what you're doing on Hibernate in a day or two and then 
> dive in there.
> 
> Regards,
> 
> Justin
> Doug Culnane wrote:
> 
>> Found no bugs. :-) and it is faster.  Good work.
>> You are using techniques that I am finding hard to follow.  This is OK 
>> because I think they are obviously good techniques, but you may have 
>> to put up with me doing some silly things as I try to get into your code.
>>
>> Updated my site to use the HEAD version.  I was having stability 
>> problems with the last version so maybe you have fixed this.  
>> Therefore we are running your changes on the main ginp site which is 
>> becoming a good stress tester.  The traffic on this site is increasing 
>> mainly as a result of some search engine work I did.  SourceForge will 
>> hopefully update their stats system soon and we can see how we are 
>> doing.  I think we will not get may leads from SF with a activity of 
>> 26% which is not too accurate because I think the activity has 
>> increased this last month.  The search results always favor the high 
>> activity sites.
>>
>> Done the xml thing for configuration.  Used XPATH (cool when you 
>> understand it) and DTD to specify defaults (seamed a good idea).  Will 
>> update documentation if when we are happy with it.  I think it is 
>> elegant and good but I am not sure if it is efficient.
>>
>> I have broken one of my tests.  This is not good but I am tempted to 
>> be aggressive about it and remove the collectionS.jsp page which is 
>> mostly not used.  It is a page that allows the user to select the 
>> collection.  This can be done with a good menu on the collection.jsp 
>> page.  I will sleep on this but let me know if you have an opinion 
>> about it.
>>
>> Started playing with eclipse but got scared and went back to jedit.  
>> It is clearly good but I have to find the time and patience to go 
>> thought the tutorials....
>>
>> I want to concentrate on Hibernate and the data structure now but 
>> again this is a learning curve, that will take time investment before 
>> it produces a net gain in productivity.
>>
>> All the best,
>>
>> Doug
>>
> 
> 
> 
> 
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